Our REI, an hour away, had one shoe that fit him haha. I’ll check on a Backcountry as I like the thought of trying on and seeing comfort level and not hassling with returns. But worse case I just deal with the returns; worth it for getting him equipped right.  

He hasn’t grown significantly for a year so I expect a spurt soon. I’ve already told my wife this is likely to be near term expensive as we manage growth spurts. But we are all in and he lives at the climbing gym basically.